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arXiv 0801.1483math.CO
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关于k-共振富勒烯图

On k-resonant fullerene graphs

Dong Ye, Zhongbin Qi, Heping Zhang

摘要:

一个富勒烯图$F$是一个3-连通的平面三次图,它正好有12个五边形和其余的六边形。令$M$是$F$的完美匹配。如果$C$的边缘交替地出现在$M$内和外,则$F$的循环$C$是$M$ -交替的。如果$F$有一个完美匹配的$M$,使得$\mathcal H$中的所有六边形都是$M$ -交替的,则$F$的不相交六边形的集合$\mathcal H$被称为共振模式(或六重模式)。如果$F$的任意$i$($0\leq i \leq k$)个不相交六边形形成一个共振模式,则富勒烯图$F$是$k$ -共振的.本文证明了富勒烯图的每一个六边形都是共振的,所有蛙跳富勒烯图都是2-共振的。进一步,我们证明了一个3-共振富勒烯图最多有60个顶点,并构造了所有9个3-共振富勒烯图,它们对每个整数$k>3$都是$k$ -共振的.最后,计算了3-共振富勒烯图的六重多项式。

英文摘要:

A fullerene graph $F$ is a 3-connected plane cubic graph with exactly 12 pentagons and the remaining hexagons. Let $M$ be a perfect matching of $F$. A cycle $C$ of $F$ is $M$-alternating if the edges of $C$ appear alternately in and off $M$. A set $\mathcal H$ of disjoint hexagons of $F$ is called a resonant pattern (or sextet pattern) if $F$ has a perfect matching $M$ such that all hexagons in $\mathcal H$ are $M$-alternating. A fullerene graph $F$ is $k$-resonant if any $i$ ($0\leq i \leq k$) disjoint hexagons of $F$ form a resonant pattern. In this paper, we prove that every hexagon of a fullerene graph is resonant and all leapfrog fullerene graphs are 2-resonant. Further, we show that a 3-resonant fullerene graph has at most 60 vertices and construct all nine 3-resonant fullerene graphs, which are also $k$-resonant for every integer $k>3$. Finally, sextet polynomials of the 3-resonant fullerene graphs are computed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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